Yoga dates back to about 1500 BCE

Practices and beliefs from Hinduism, Buddhism, and Jainism influenced yoga

Yoga scholars Mark Singleton and James Mallinson’s study, “Roots of Yoga,” collects over 100 core texts on the subject. They found that many different ethnicities and religions practiced yoga in antiquity; Singleton says that the practice was a “floating technology between various religious systems.”

An 1893 speech in Chicago set the stage for yoga in the US

Swami Vivekananda, a Hindu monk, spoke to the World’s Parliament of Religions, addressing those in attendance as his “sisters and brothers of America.” The speech—and Vivekananda’s subsequent lecture tours—introduced many in the West to Hinduism, setting the stage for the interest in yoga that would follow in the next century.

Theos Bernard's book on yoga formalized the practice for many Americans

His 1943 book “Hatha Yoga: The Report of a Personal Experience” was supposedly based on a 1936 trip through India and Tibet, though it’s believed many of the details were fabricated. Still, the book featured photos of Bernard in numerous postures that were some of the first published in the US, helping to popularize yoga in America.

Stretching and breathing are just two aspects of yoga

Most contemporary yoga studios focus on two of astanga yoga’s eight branches, as codified in the ancient text “Yoga Sutras of Patañjali”: asanas (physical postures) and pranayama (breath control). However, the larger practice of yoga includes six additional limbs: yama (universal ethics), niyama (individual ethics), pratyahara (control of senses), dharana (concentration), dhyana (meditation), and samadhi (pure consciousness).

BKS Iyengar emphasized yoga's physical aspect

The guru’s 1966 book “Light On Yoga” included detailed instructions for over 200 postures, presenting a version of yoga that emphasized it as a form of exercise with controlled breathing, believing that its physicality was the key to unlocking its spirituality. The book was the first mass-market manual to show the poses, furthering the Western impression that yoga was primarily about exercise.

Learn about 12 basic yoga postures

A typical yoga class runs students through a sequence of basic postures, also known as asanas. This illustrated guide outlines 12 poses—including the “plough,” “fish,” and “crow”—and breaks down the specific benefits.

‘Namaste’ was popularized in the English language after India gained independence

The word, which roughly translates to “I bow to you,” is a greeting often used in yoga. The word began appearing in American publications more frequently following the country’s liberation, and was standardized shortly thereafter.

The earliest mention of time travel

Time travel has fascinated humans for centuries. It appears in myths, literature, and science fiction. One of the earliest examples comes from the 400 BCE Hindu epic Mahabharata, describing time dilation long before Einstein’s Theory of Relativity. By the 19th century, stories introduced machines enabling time travel—setting the stage for modern sci-fi.

Yoga can be beneficial for aging practitioners

Studies suggest that yoga can help alleviate several diseases associated with aging by lowering blood pressure, reducing blood fat levels, and combating obesity. It has also been shown to increase telomerase activity, which helps slow cell aging.

Yoga has become a popular tool for veterans dealing with PTSD

As the practice has become more popular in the West, it’s been incorporated into the Department of Veterans Affairs’ treatment plans for post-traumatic stress disorder. Veteran instructors say that although yoga and the military might seem like odd fits, they share many commonalities, including a rigorous approach. (Some readers may experience a paywall.)

Ancient Greece originated roughly 4,000 years ago around the Aegean Sea

From architectural feats to the Western alphabet, ancient Greece has helped shape modern life. Over centuries, the eastern Mediterranean culture grew as far as India, Egypt, and Spain. Its cultural influence has long since spread beyond any physical boundaries.

One classical musician arranged a work specifically for yoga

In the middle of a yoga class, Ellen Fishman noticed that sitting closer to a speaker allowed her to feel the music in her body, enhancing her overall experience. She arranged music for a string ensemble with a yoga session in mind. The group, StringFlo, now performs the work live in yoga classes.

Chess traces its roots to chaturanga in sixth-century India

The earliest form of chess, known as chaturanga, emerged in India around the sixth century. The game simulated four divisions of the military—infantry, cavalry, elephants, and chariots—and laid the foundation for modern chess’ structure and strategy.

The earliest record of dream interpretation dates to Ancient Sumer

Ancient Babylonia was a hub for oracular studies. Dreams were seen as nightly dispatches from lower-world or chthonic deities, and practices including astrology, omen reading, and liver divination attained wide-reaching influence. Few surviving records of oneiromancy—interpreting dreams as revelations of future events—have been found.

Food allergies were first documented more than 4,000 years ago

Although food allergies are on the rise in modern times, they have been documented in written records for thousands of years. More than 3,000 years ago, Chinese emperors advised patients to avoid certain foods, and Hippocrates noted in his work that food could cause serious harm to certain individuals, and even lead to death.

Modern bodybuilding evolved in the 19th century

The origins of modern progressive resistance exercise are traced to ancient Greece, where a repeat Olympic victor carried a calf every day until it grew into a full-sized ox. This 56-minute comedy and history podcast journeys through the rise of modern bodybuilding, which took off during the 19th century.

The concept of life insurance likely originated in ancient Rome around the year 100 BCE

However, life insurance policies didn’t reach the Americas until 1759, when life insurance started being used to protect the families of Protestant ministers when said ministers died. This timeline of life insurance’s early history—and how it has evolved since then—provides more details.

Rapping has roots in numerous aspects of the Black oral tradition

Although “rapping” began in New York with hip-hop in the early 1970s, it can be traced back to griots, who were storytellers in West Africa, and “toasting,” which was a similar talk-sing style practiced by dancehall DJs in Jamaica.

Nail art can be traced back to 5,000 BCE

Archaeologists discovered Egyptian mummies with nail art and henna-tinted fingertips. The trend would continue informally for centuries until Revlon introduced modern nail polish in 1932.

Native Americans developed pottery and religion, and experienced population growth during the Woodland period

Between 500 B.C.E. and 1100 C.E., Indigenous peoples produced pottery and practiced animism, a spiritual worldview in which animals, plants, and natural forces are believed to possess sacred power. They moved seasonally to make the most of available resources.

Graffiti dates back to at least ancient Pompeii, where citizens scrawled messages to one another on public walls

Marriage as a concept is believed to be at least 4,300 years old

In the past, formal marriage spread because it was a great way to accumulate property and allies. Now, some couples want love and healthy companionship. Marriage has undergone many transformations, from the inclusion of consent, thanks to religious leaders, to sanctification by the state.

Crypto's origins date back to 1983

While crypto feels new, it actually dates to 1983, with eCash's creation. However, a lot has happened in the crypto world over the past few years in particular—crypto's market cap surpassed $2T for the first time in 2021, for instance. A timeline of crypto's history details the events in between.

The mystery of the cucumber, from coiling tendrils to its bitter, mature fruit

Cucumus sativus was first cultivated 3,000 years ago in the Himalaya of India, appearing in ancient Sanskrit hymns in the Hindu tradition. They are typically harvested well before maturation, as their yellow, final fruit is bitter. Their coiling tendrils were so distinct they prompted famed naturalist Charles Darwin to publish one of his lesser-known works, "On the Movements and Habits of Climbing Plants." Its refreshing coolness inspired cucumber-derived body washes and sprays over millennia.

What is rhetoric?

The roots of "rhetoric" stretch back to ancient Greece, where early philosophers defined rhetoric as the art of winning the soul through discourse or the art of persuasion. Rhetoric and its proposed nature have since shifted, with more modern sources describing rhetoric as a natural byproduct of language, the intentional framing of discourse, or the study of how humans use symbols and language to carry out human activity.

The world’s oldest tattoos belong to 'Iceman' Ötzi

Ötzi is the corpse of "the Iceman" found in the Alps along the Italian and Austrian border in 1991. His mummified body was covered with lines and crosses along the “hard-working” areas of his body, signifying their potential application for therapeutic pain management.

The word 'jazz' evolved from 'jasm,' 19th-century American slang for 'energy'

Trace how the Bill of Rights, inspired by centuries of political theory, took shape between 1774 and 1789.

Learn more about the history of fireworks, which dates back to an accidental invention during an alchemist's quest for information about immortality.

Poison ivy's characteristic rash is caused by an allergic response to an oily compound in the plant called urushiol.

The term 'algorithm' originated from the Latinized name of al-Khwārizmī, a 9th-century mathematician whose works introduced Arabic numerals and the decimal-based numeral system to Europe and whose treatise 'Al-Jabr' gave algebra its name.

After 25 people used virtual reality headsets to practice flying with virtual wings—flapping their arms—their visual cortex responded to the wings almost as if they were real arms, treating them as body parts.

Hear 50 years of iconic hip-hop samples, the genre's foundational looped tracks

As of 2025, the most cited papers in science include a review of graphene, methods to improve image recognition, streamlining electron density calculations, and optimizing protein studies.

The 19th-century painters of the Hudson River School were among the first American romantics, with portraits that displayed the natural beauty of the young country.

While the first exchange-traded fund (a 'basket' of different assets that can be bought and sold on a stock exchange) in the US only launched in 1993, the global ETF market has grown to more than $10T in the short time since.

NBA superstar Victor Wembanyama spent the 2025 summer training with monks in central China to enhance his body and mind.

'Shogun,' a 1980s TV series, helped popularize sushi in the US by stimulating an American interest in Japanese culture.

Take a 3D tour of the Hajj, Islam's annual pilgrimage to Mecca, undertaken by over 1.5 million Muslims.

For centuries, it was common to sleep in two shifts: a few hours at the beginning of the night, and a longer period beginning around midnight

See how each of the more than two million known species relates to each other—and to common ancestors—in this zoomable tree of life.

See photos of Meteora, a mountainous site in central Greece, home to 14th-century monasteries perched atop soaring outcroppings.

Budweiser stores yeast derived from the original 1800s strain in a secret bunker, which only the Head of Yeast Management can access—not even the CEO

Scientists can determine Earth's past climate conditions by analyzing air trapped in microscopic bubbles within ice cores—columns of compressed snow layers that build up over hundreds of thousands of years.

20,000 letters to the advice columnist 'Dear Abby' provide insight into prevailing sex, religion, and LGBTQ fears, anxieties, and concerns from the 1950s onward.

SpongeBob exemplifies Aristotle's philosophy for living well because he understands that happiness doesn't come from external factors like money, recognition, or power.

While the sun's gravity keeps the planets in orbit, their gravity also pulls on the sun, causing it and everything else in the solar system to orbit around a mutual balance point called the barycenter—the true center of the solar system.

Before humans, the Soviet Union and the United States sent animals—including apes, dogs, and cats—to space during the Space Race.

The hormonal disorder PCOS was renamed PMOS in 2026, a move designed to improve care and research by shifting the focus to the hormonal causes of this condition that affects 1 in 8 women.

Sunflowers have long been a symbol of nuclear disarmament because they can extract large amounts of radioactive cesium from soil.